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37、roved on June 14, 2016 by ANSIRecirculating direct gas-fired heating and forced ventilation appliances for commercial and industrial applicationsANSI Z83.18-2017ANSI Z83.18-2017Recirculating direct gas-fired heating and forced ventilation appliances for commercial and industrial applicationsMarch 20
38、17 2017 CSA Group 1ContentsZ21/83 Technical Committee on Performance and Installation of Gas Burning Appliances and Related Accessories 3Z83/CSA Joint Technical Subcommittee on Gas-Fired Heavy-Duty Forced Air Heaters 6Preface 91 Scope 132 Reference publications 143 Definitions 174 Construction 244.1
39、 General construction 244.2 Assembly 254.3 Accessibility 264.4 Main burners 264.5 Combustion air control 274.6 Orifices and orifice fittings 274.7 Automatic gas ignition systems 274.8 Flame safeguards 284.9 Valve trains 304.10 Manual gas valves 314.11 Gas supply lines 314.12 Atmospheric vents and ga
40、s reliefs or bleeds 344.13 Automatic valves and safety shutoff valves 354.14 Gas appliance pressure regulators 354.15 Discharge air, purge, limit controls, and interlocks 364.16 Thickness of materials 394.17 Fan motors 414.18 Fans 444.19 Air filters 444.20 Protection of service personnel 444.21 Oper
41、ating and installation instructions 474.22 Marking 505 Performance 545.1 General 545.2 Test gases 565.3 Test pressure and burner adjustments 575.4 Basic test arrangement 575.5 Air throughput measurement 615.6 High temperature limit control system 615.7 Air flow sensing systems 625.8 Operating temper
42、ature control system 655.9 Combustion 66ANSI Z83.18-2017Recirculating direct gas-fired heating and forced ventilation appliances for commercial and industrial applicationsMarch 2017 2017 CSA Group 25.10 Burner operating characteristics 685.11 Piloted ignition systems 695.12 Direct ignition systems 7
43、05.13 Gas appliance pressure regulators 715.14 Automatic valves 715.15 Burner and heater input rating determination 725.16 Manifold and control assembly capacity 725.17 Wall, floor (optional), ceiling, electrical equipment, and wiring temperatures 725.18 Electrical continuity and dielectric strength
44、 735.19 Heaters for outdoor installation 745.20 Rain and wind tests for inlet air openings 775.21 Marking material adhesion and legibility 796 Electrical equipment and wiring 807 Manufacturing and production tests 91Annex A (normative) Emissions protocol 93Annex B (informative) Protocol for the meas
45、urement of and emissions ratings for Nitrogen Oxides and Carbon Monoxide from direct gas-fired heaters 106Annex C (informative) Pertinent references to ANSI Y14.15 108Annex D (informative) Wire color designations 109Annex E (informative) Recommended wire color usage 110Annex F (informative) Preferre
46、d graphic symbols of commonly used items, extracted from standard ANSI/IEEE 315, Graphic symbols for electrical and electronics diagrams, and abbreviations for these items 111Annex G (informative) Table of conversion factors 113ANSI Z83.18-2017Recirculating direct gas-fired heating and forced ventil
47、ation appliances for commercial and industrial applicationsMarch 2017 2017 CSA Group 3Z21/83 Technical Committee on Performance and Installation of Gas Burning Appliances and Related Accessories B.J. Swiecicki National Propane Gas Association, Washington, District of Columbia, USA Category: Gas Supp
48、lierChairM.W. Wilber Crane Engineering, Plymouth, Minnesota, USA Category: General InterestVice-ChairM. Ali Association of Home Appliance Manufacturers, Washington, District of Columbia, USA Category: ManufacturerAlternateJ. Brania Underwriters Laboratories Inc., Melville, New York, USA Category: Re
49、search/TestingJ. Cutts The Home Depot, Atlanta, Georgia, USA Category: General InterestM. Deegan Clearwater Gas System, Clearwater, Florida, USA Category: Government and/or Regulatory AuthorityM. Diesch Lennox International Inc., Carrollton, Texas, USA Category: ManufacturerJ.M. Emmel Virginia Tech, Blacksburg, Virginia, USA Category: Consumer/UserG. Gress International Code Council, Chicago, Illinois, USA Category: Government and/or Regulatory AuthorityANSI Z83.18-2017Recirculating direct gas-fired heating and forced ventilation appliances for commercial
